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10.13 Master/Slave Configuration
Drive address shall be set by the optional jumper of interface connector.
The drive runs as Master drive when the jumper is open or if jumper plug is set to position B-D when
P28(CSEL) signal is low. The drive runs as Slave drive when the jumper plug is inserted into position C-D
or if jumper plug is set to position B-D when P28 (CSEL) signal is high. In case of two- drive
configuration, one shall be Master and the other should be Slave.
ATA /ATAPI specifies to use P28 with jumper plug set to position B-D. It is recommended to follow the
ATA / ATAPI specification.
Jumper P28 Drive
No Jumper - Master Drive
C-D Jumper - Slave Drive
B-D Jumper LOW Master Drive
B-D Jumper HIGH Slave Drive
Prohibit A-B Jumper - -
Prohibit A-C Jumper - -
Figure 6 Optional jumper for Master/Slave
Polarity key
43
44
1 C A
2 D B